Insole and method of making insoles



1936- G. H. NICHOLS ET AL 2,051,837

INSOLE AND METHOD OF MAKING INSOLES Filed May 14, 1934 Patented Aug. 25,1936 UNiTED STATES Application May 14, 1934, :Serial N9. {1255452 HClaims. (01. 36-22) This invention relates to insoles and to methods ofmaking insoles and is illustrated herein with reference to insolesprovided with lips to which shoe uppers may be secured in lastedposition -5 either temporarily-or permanently.

A number of synthetic materials have been developed in recent years foruse as insoles in shoes of the type in which an upper is lasted over thebottom of an insole and an outsole secured in contact with theoverlasted portion .of the upper. These insole materials consist, forexample, of layers of vegetable fiber such as wood pulp impregnated withand bound together by rubber in the form of latex and, whilesatisfactory .for use in shoes of the type indicated, are not sosatisfactory for use in shoes which require the insole to be channeledto form a lip to which an upper may be attached, either temporarily orpermanently, for the reason that the go channel formed in such materialtends to become extended when stress is applied to the lip; that .sis,the layers of material tend to separate at the FbflSB of the lip. V v aObjects of this invention are to enable insoles .25 of "this characterto be utilized effectively in shoes requiring alip formed by achanneling operation, :to :which' lip the upper issecured in lastedposition. In one aspect the invention comprises an insole having :a lipformed therein by a chan- 30 .:neling operation and fastening means suchas a through-:and-through seamlocated at the base :of the,lip;-togprevent stress on the lip from causing the channel to. be jextendedinto the unchanneled portion of the sole. As illustrated,

35 an inside channel is formed entirely around the periphery of theinsole except at the heel-seat portion at a suitable distance from itsedge, and a through-and-through seam is sewed through the body of theinsole at the base of the channel 40 lip so as to prevent the channelcut from extending outwardly, thus preventing the lip from being widenedand the feather portion narrowed. In another aspect the inventioncomprises a method of making insoles which consists in form- 45 ing aninsole lip by a channeling operation and sewing a through-and-throughseam at the base of the lip to prevent extension of the channel cut inthe unchanneled portion.

With the above and other objects in view the 50 invention will now bedescribed in connection with the accompanying drawing and thereafterpointed out in the appended claims.

In the drawing, Fig. l is a perspective view of an insole em- 55 bodyingthe present invention; and

insole. -.i ihe.;in n 'e ill i hextp o de adiacentitp its i =2 is atransverse sectional view @if the insole .on an enlar ed scale take onthe line The illustratedinsole c mpr s a h flexibie body portion t9(which, a il ust a ed her in, is .5 mad roman a ificial l ath r composiio con;- sistin of wood fiber or pu p an a b ndin a ent u i or e a p eas t x. Th nso e-may, h ev r be omp s d of o h r inarte ia s to mp e. ea-hcror c mpo itions of leat er, fiber 10 M nubber, wit out eparti fr m te spi it c the invent on. The natu e of the materi l-discl ed h r n. i sc thati the so e split o c anncled the s v red po t o win hareastendecy, f tom s app ed thereto. :t t ar a sea away. from the body portion ofthe insole it a layer which is substantially the same hr u o t s mi othe manne w nch one a e of a lam n ted s p of .mat nia wi ree awa rom te main o n i separated and dorce is applied thereto;

.A i i the heel p ion of {the hassle :li .is-eme e ably -;-rei '6 by alayer Of less flexibl mater a :Su has fiberboard, s that th rma -seat n-ti n of th n ole w substant all fia while the shan -and forepart arefree to bend and thus adapt'theme selves readily to the shape of thelast upon which the insole is to be mounted in the -manuiacture ofashoe. The layer 12 may be cemented 170. the heel portion of the insole;or it may be secured thereto by cement and/orstaples 1-4, asillustrated in .Fig. 1, the endsof the staples being -.clinched-inwardlyagainst the outer face of the marginal portion with a channel it formedby making a split or cut in the outer face of the insole inwardly of thefeather portion thereof, the split extending outwardly toward the edge40 of the insole to approximately the inner edge of the feather. Thusthere is provided around the margin of the insole a channel flap l8which, when raised into an upwardly inclined position, as shown in Fig.2, will serve as a rib or lip to which a shoe upper may be secured bystaples or otherwise to hold the upper in lasted relation to the insole.The depth of the channel cut I6 is somewhat less than half the thicknessof the insole and the width of the flap or rib I8 is illustrated asbeing approximately half the width of the feather portion of the insole.

Since the material which forms the rib has a tendency to split or peelaway from the body portion of the insole when force is applied to therib, it will be obvious from Fig. 2 that, unless prevented, the rib [8will tend to split toward the edge of the insole if a shoe upper werenow secured to the rib, thereby widening the channel l6 and increasingthe width of the rib l8. Accordingly, in order to prevent splitting orpeeling of the material there is now inserted in the body portion of theinsole a row of through-andthrough stitches 20 which is located alongthe base of the lip l8 at the outer edge of the channel and prevents thematerial from splitting when force, for example, the strain or pull of ashoe upper which has been secured in lasted relation to the lip, isexerted thereon. The through-andthrough stitches 20, therefore,definitely determine or fix the width of the lip I8 and prevent the lipfrom splitting away from the solid portion of the insole to widen thechannel and increase the width of the lip.

While the insole I0 is illustrated herein as having an inside channelwhich starts inwardly of the marginal portion of the insole and extendsoutwardly to the feather portion thereof so that the flap or lip l8 willbe raised outwardly or toward the edge of the insole, thethrough-andthrough stitches being located outwardly of the channel atthe outer side of the base of the rib, it should be understood that thechannel may, without departing from the invention, be cut inwardly fromthe edge of the insole so that the channel flap will be raised away fromthe marginal portion, the stitches in this case being located along theinner side of the base of the rib to prevent the material from peelinginwardly toward the central portion of the insole.

An insole prepared as described above may be used in the manufacture ofshoes the uppers of which are temporarily secured in lasted position toa lip while cement, by which the uppers are to be permanently secured inlasted position, is setting. It may also be'used in shoes in which theupper and a welt are permanently stitched to the lip to hold the upperin lasted position, as in the manufacture of Goodyear welt shoes.

Having described our invention, what we claim as new and desire tosecure by Letters Patent of the United States is:

1. An insole having an inside channel cut therein the flap of saidchannel forming a single integral lip of uniform thickness to which ashoe upper may be secured to hold the upper in lasted relation to theinsole, and a single row of reinforcing stitches inserted along the baseof the lip and coinciding with the outer edge of the channel to preventany widening of said channel.

2. An insole having inwardly of its marginal portion a channel parallelto the inner and outer surfaces of the insole and extending outwardlytoward the edges thereof, the depth of said channel being less than halfthe thickness of the insole and the channel flap forming a single rib ofuniform thickness to which a shoe upper may be secured, said insolebeing formed of material such that force applied to the rib tends towiden the channel by splitting of the material in a plane substantiallyparallel with the bottom surface of the channel, and through-and-throughstitches inserted along the base of the rib and at the outside edge ofthe channel to prevent the material adjacent to the channel fromsplitting when. force is applied to the rib.

3. That improvement in methods of making insoles which consists incutting an inside channel in the marginal portion of an insole parallelto its inner and outer surfaces to provide a flap which will form asingle rib of uniform thickness to which a shoe upper may be secured,and inserting a single row of stitches through the insole at the base ofthe rib to prevent said rib from peeling into the unchanneled portion ofthe insole and thereby widening the channel when force is applied to therib.

4. That improvement in methods of making insoles which consists informing an inside channel at the marginal portion of an insole parallelto the outer surface thereof to provide an integral flap of uniformthickness which when raised into an upstanding position will serve as asingle rib to which a shoe upper may be secured to hold the upper inlasted relation to the insole, said channel extending toward the edge ofthe insole and being less in depth than half the thickness of theinsole, and inserting a single row of stitches through the insole at theouter edge of the channel to reinforce the feather portion of the insoleand definitely to determine the width of the rib. 5. An insole ofuniform thickness and of material having a tendency to split undertension in planes parallel to the inner and outer surfaces of theinsole, said insole having an inside channel located inwardly of theedge face of its outer surface to leave a feather portion on the insoleand to form an integral upper attaching lip of uniform thickness, and asingle row of stitches located in said feather portion contiguous to thelip to prevent the material of the insole from splittin under tensionapplied to the lip and thereby widening the lip and narrowing thefeather portion of the insole.

GEORGE H. NICHOLS. JOHN A. CASWELL.

